Axios

New sustainable debt instruments, like green bonds and green loans, are seeing a significant pickup in investor interest.

What it means: While it's still a de minimis fraction of the global debt market, green bonds saw explosive growth in the second quarter. Dedicated green bond ETFs attracted some $2 billion of net inflows in Q2, including $1.1 billion in June, data from the Institute of International Finance shows.

The amount of bonds with negative yields has grown to more than $13 trillion, data from the Institute of International Finance shows, and unlike in 2016 the amount of debt below zero looks poised to grow.

What's happening: Since European Central Bank President Mario Draghi's latest news conference signaling the central bank is poised to further ease its already negative interest rate policy, bond yields have been dropping below zero across Europe.

Livongo, a health tech startup that provides diabetes coaching, filed papers for its initial public offering on Friday, a move that's seen as a test for how well such startups may do in public markets, Stat reports.

Between the lines: This new generation of buzzy, venture capital-backed health care companies hasn't produced an IPO since 2016. A second digital health company, Health Catalyst, filed to go public on Thursday.

Of all the hardware options consumers can use to access over-the-top television, Smart TVs are experiencing the highest level of growth, according to Comscore's latest State of OTT presentation.

Why it matters: Smart TVs face the same data privacy vulnerabilities as other internet-connected devices.

There are 3 ways that a company can go public: a traditional IPO, a Dutch auction (Google being the prime example), or a direct listing.